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Mice21 [21]
4 years ago
13

8x-8+3ax=5ax-2asolve for a

Mathematics
1 answer:
Kisachek [45]4 years ago
8 0

Answer:

a=4

Step-by-step explanation:

8x-8+3ax=5ax-2a

Get all the terms with a on the right side

Subtract 3ax from each side

8x-8+3ax-3ax=5ax-3ax-2a

8x-8 = 2ax -2a

Factor out an 8 on the left and 2a on the right

8(x-1)  = 2a*(x-1)

Divide by (x-1) on both sides

8(x-1)/(x-1)  = 2a*(x-1)/(x-1)

8 = 2a

Divide by 2

8/2 =2a/2

4 =a

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The Hydro water department has a monthly service charge of $10.10 and a volume charge of $1.58 for every 100 cubic feet of water
cluponka [151]

Answer:

B. a decrease in their water bill of $3.16.

Step-by-step explanation:

Monthly service charge =$10.10

Volume charge = $1.58 for every 100 cubic feet of water.

Total monthly cost = 1.58x + 10.10

If the Johnson family used 200ft^3 less water this month than last month, then they can expect a reduction in their bill by the Volume charge for  200ft^3.

Volume Charge per 100ft^3 of water = $1.58

Therefore: Volume Charge for 200ft^3 of water = 2 X $1.58=$3.16

Therefore, the Johnson family can expect a decrease in their water bill of $3.16.

3 0
3 years ago
I need help please help me​
alexdok [17]
It’s 3 because 15\5 is 3
3 0
3 years ago
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777dan777 [17]
Answer:
f(x) = x⁴-6x³-13x²+66x+72
Step-by-step explanation:
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5 0
3 years ago
Xian plans to run 14 laps around a track, each lap is 400 yards which would make his run a total of 5600 yards. So far Xian has
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Answer:

4.2 laps

Step-by-step explanation:

because 4 laps is 1600+ the 80 which is a 1/5 of 400 causing it to be .2

6 0
3 years ago
Jack and Walter work in a store's gift-wrapping department. Jack can wrap 28 boxes in 2 hours, while Walter takes 3 hours to wra
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4 years ago
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